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Assigning an unique ASIN
Cliff Woodworth
February 7, 2014 - 7:23 am
Member Since: December 28, 2013
Forum Posts: 233
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Apologies at the start for my lack of knowledge, pretty new to it all.
I am trying to upload my magento products from M2E Pro into amazon but i want to be able to have a unique description and bullet points for my listing (fetched from magento listing info). The only way i seem to be successful with listing an item is when i assign an ASIN manually or automatically but this just finds a similar product on amazon with a description that has been prepared by the other seller and I want mine to be unique.
Any ideas on the best way to to this?

Calum Roberts
February 7, 2014 - 8:18 am
Member Since: January 4, 2014
Forum Posts: 275
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If you want a listing on your own, you need to have an ean number, or barcode as they are commonly know. Depending on where you get these from, they can be pricy. Or sign up to GS1 for barcodes exclusive to you.

Dave Furness

February 7, 2014 - 11:03 am
Member Since: July 19, 2013
Forum Posts: 4606
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Hi Cliff

Great question you raise here and quite a common one.

Amazon try to limit the amount of duplicate items in their catalogue as much as possible, but sometimes you can get unlucky and if someone has already listed and done a pretty terrible job of the title, bullet points and description then that can get really annoying.

You can contact Amazon with the product details that you would like to add for the product in question, and if it is deemed better information than what is currently available then Amazon will update the listing with your information you provided. More on this here:…..=200492820

If however it is a product that does not already exist on Amazon or is a unique product that you have available then as Calum has said above, you will need a barcode usually EAN, UPC or ISBN if your selling books. When you submit a product to Amazon with a barcode, Amazon will then generate you a unique ASIN for that product. But they will only do this once a barcode has been attributed to that product.

Now barcodes can become a bit of a minefield as they are not always very clearly explained. However myself and Matt had a meeting with GS1 – Last week. GS1 are a not for profit organisation to standardize the use of barcodes globally, and are where most people will get barcodes for new / unique products to help them sell online.

We are currently in the process of working on a plan of guides with GS1 to ‘demystify’ barcodes as much as possible and explain in Plain English, what they are, why they are useful and how to use them online. It’s early days at the minute but they are in the pipeline.

In the meantime if you need anymore help please let us know, and we’ll do our best to help.


Every expert was once a beginner

Calum Roberts
February 7, 2014 - 3:53 pm
Member Since: January 4, 2014
Forum Posts: 275
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Just like to add that signing up to GS1 the first time has a joining fee and a cost for your first 1000 barcodes, then a yearly fee (£117) my invoice has just come in yay.
You can purchase additional barcodes as needed in lots of 1000.

Off the top of my head for the first year its about £250 for joining and first 1000 barcodes, thats a rough estimate

Cliff Woodworth
February 9, 2014 - 8:43 pm
Member Since: December 28, 2013
Forum Posts: 233
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Thanks so much for you help. That definitely helps a lot!
I tried to assign a number of ASIN’s (62 to be precise) in one go but it seems to have stalled and keeps searching continuously. How can i stop this? i have left it ticking along for hours now but no change.
Hope someone can help as i can’t list anything else until this process stops.
Thanks Cliff

Erica Brennan

February 12, 2014 - 10:46 am
Member Since: October 22, 2013
Forum Posts: 30
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Just as a side note – if you are selling a product that is created by you, then you also have the option of joining the Amazon Brand Registry. Once they accept you, you don’t need barcodes or ASIN or anything to list – just a unique SKU for each item (which can be anything), and Amazon automatically creates the ASINs for you. It wouldn’t apply to you if you’re selling the same products as others do, but I didn’t even know the Brand Registry existed, and I almost spent hundreds of pounds on buying barcodes! I’m now part of the Brand Registry, and selling on Amazon that way. Saved me a ton of money – just in case anyone else in my position reads this thread! :)…..d-registry

Matthew Ogborne

February 14, 2014 - 9:26 am
Member Since: July 18, 2013
Forum Posts: 4565
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Hi Erica,

Good call!!

Also found the UK version here


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